Plant for the manufacture of envelops, paper bags, or the like.



R. E. FISCHER & M. WESGHER.

PLANT FOR THE MANUFACTURE OF BNVELOPS, PAPER BAGS, OR THE LIKE.

APPLICATION TILED APR.2. 1909.

I 952,986. Patented Mar. 22, 1910.

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ROBERT ERNST FISCHER AND MAX WESCHEE, 0F ELBERFELD, GERMANY.

PLANT FOR THE MANUFACTURE OF ENVELOPS, PAPER BAGS, OR THE LIKE.

To all whom it may concern:

Be it known that we, ROBERT ERNST FISCHER, a subject of the GermanEmperor, residing at Elberfeld, in the Kingdom of Prussia, GermanEmpire, and MAX WEsoHEn, a subject of the German Emperor, residing atElberfeld, in the Kingdom of Prussia, German Empire, have jolntlyinvented a new and Improved Plant for the Manufacture of Envelope, PaperBags, or the Like, of which the following is a specification.

The present invention relates to a new and improved plant for themanufacture of envelops, paper bags or the like and it has for itsobject the combination of a machine for gumming and folding the workwith a printing machine, the ob ect being to eflect the automatictransfer of the envelops to the printing machine and to obtain a highrate of output from the installation as a whole.

The combination which consists, say, of an envelop machine with aprinting machine, for the purpose of printing the envelops as soon asthey are manufactured, in such a way that the envelops on leaving thefolding machine immediately come between the printing rollers of theprinting machine, presents numerous disadvantages. For instance thegummed or adhesive coated surfaces of the envelops being moist when thelatter pass between the printing cylinders, the printing becomesimpaired and the gum or adhesive squeezed out; moreover if at any timean envelop should remain behind owing to failure of the suction deviceof the envelop machine or the like, the printing roller must be raisedfrom the counting roller in order to prevent the latter receiving animpression and so soiling the succeeding envelop. As the lifting of theprinting roller and its subsequent depression occupies a certain amountof time, the output of the installation is greatly impaired by thenecessity for effecting this operation.

In order that the said invention may be clearly understood and readilycarried into effect, we will proceed to describe the same with referenceto the accompanying drawing which illustrates somewhat diagrammaticallymeans whereby the above mentioned objections are avoided or minimized.

The cut sheets of paper for the envelop machine a are placed in areceptacle or holder 0 from which the sheets are separately transferredby suction device d to Specification of Letters Patent.

Application filed April 2, 1909.

Patented Mar. 22, 1910. Serial No. 487,423.

the machine a and introduced into the train of rollers constituted bythe respective pairs indicated at 6. These rollers effect the foldingand gumming of the envelops and the finished envelops Z pass by means ofan end less band is to the collecting receptacle m. The band is isarranged about the rollers 2' and o the latter being mounted in bearingsor brackets to provided on the receptacle m. A reciprocating slide 11.is arranged to work beneath the receptacle m so as to engage the sealingflap of the lowermost envelop, and in any desired or known manner bringsit between the printing rollers p and q of the printing machine I). Theenvelops as they are printed fall into a collector or receptacle u.

The result of the arrangement above described is that the envelops onleaving the machine a have time to dry in the collecting receptacle mand so do not reach the rollers of the printing machine until they aredry, and in addition the failure of the suction device (l and theabsence of an envelop does not necessitate the lifting of the printingroller p, as even in case no envelop should fall into the collecting boxm, the slide or invariably takes an envelop from the reserve which isleft in the said receptacle and thereupon conveys it to the printlngrollers, so that the failure of the suction device merely entails forthe time being a diminution of the reserve of envelops in the collectingreceptacle m.

A further important advantage is obtainable by means of the presentinvention as the envelop machine can be driven more rapidly than theprinting machine so as to avoid the necessity of stopping the printingmachine during the insertion of fresh sheets of paper in the receptacle0, it being under-V stood that while the envelop machine is operativethe reserve of envelops in the collector m constantly increases. Thisaddi tional reserve is then dealt with by the printing machine, whilethe insertion of the aforesaid fresh sheets in the receptacle 0 is beingeffected. As the output of the plant is mainly restricted by the outputfrom the printing machine, which cannot be run too quickly itconstitutes an important improvement in the art that the printingmachine can continue to operate during the time that the envelop machineis running idly owing to the insertion of fresh sheets. In the draw ingillustrating the present invention, this last mentioned result isincidental to the arrangement of a chain wheel 9 provided on the shaft fof the envelop machine a, the said shaft also carrying a driving pulleyh. The chain wheel 9 by means of a, chain t drives the somewhat largerchain wheels pertaining to the shaft 1 of the printing machine 6.

We claim: p

,1. In a machine for makingand printing envelope, paper bags "or thelike,=.the combination of the following instrumentalities; a folding andgumming mechanism, a printing mechanism, 'driven therefrom but at lowerspeed,=aicollecting receptacle in-which the articles are'piledhorizontally, means for automatically delivering the gummed and foldedarticles,--one at a time, to the receptacle, and means for automaticallydelivering the lowermost one of the pile to the printing mechanism.

2. Ina machine for making and printing envelops, the combination of thefollowing instrumentalities; a folding and gumniing mechanism, aprinting mechanism driven therefrom but at a lower speed, a collectingreceptacle in which the envelops are piled horizontally, means forautomatically delivering the gummed and folded envelops one at a time tothe receptacle, a reciprocating slide beneath said receptacle, uponwhich the pile rests, adapted to engage the sealing flap of thelowermost envelop and deliver it to the printing mechanism.

In testimony whereof we have signedour names to this specificationinthe'presence of two subscribing witnesses.

ROBERT ERNST FISCHER. -[L.*S.] MAX WESGHER. [1). 8.] Witnesses:

=O'n'ro KNIG,

FRITZ MI'iLLER.

